#05232B
Closest named color: Rich Black (#0D1B2A). oklch(23.8% 0.038 219), rgb(5, 35, 43).
Aa
White text reads best on this color (16.38:1).
About this color
#05232B is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.038 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 16.38:1.
| Hue family | Teals and cyans |
| Lightness | very dark (24%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.28:1 |
| White text | 16.38:1 |
Values
| HEX | #05232B |
| RGB | rgb(5, 35, 43) |
| HSL | hsl(193, 79%, 9%) |
| OKLCH | oklch(23.8% 0.038 219) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #05232B | 16.38:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #05232B | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #05232B text on white | 16.38:1 | AAA | Lc 103.2 | Preferred for body text |
| #05232B text on black | 1.28:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE4
oklch(88.4% 0.024 219.7)
-
Step 300
300
#A1C8D4
oklch(80.9% 0.045 218.5)
-
Step 400
400
#6BACBF
oklch(70.8% 0.072 218.4)
-
Step 500
500
#3C96AF
oklch(63% 0.092 219.4)
-
Step 600
600
#04809B
oklch(55.5% 0.1 219.7)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#01586B
oklch(42.6% 0.077 219.1)
-
Step 900
900
#124957
oklch(37.7% 0.06 218.7)
-
Step 950
950 (this color)
#05232B
oklch(23.8% 0.038 219)
#05232B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #1E222B | 0.032 |
| Deuteranopia (no green cones) | #191E2B | 0.029 |
| Tritanopia (no blue cones) | #002626 | 0.018 |
| Achromatopsia (no color) | #202020 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05232B
#05232B
oklch(23.8% 0.038 219)
- #2E1811
#2E1811
oklch(23.7% 0.038 38.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #05232B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Dark #1B2431 ΔE 0.031
- Jet #212529 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.043
- Rich Navy #001219 ΔE 0.070
- Space Cadet #2B2D42 ΔE 0.077
- Gunmetal #293241 ΔE 0.081
- Navy Blue #001146 ΔE 0.084
Use #05232B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.